CONVERTERS 



377 



Therefore the alternating current in the line is 



j __EI_ _ EI _2V / 2 J 



n ' 



n 



2V2 



and the alternating current in the winding is 



EI v/ ^ 



. . (352) 



(353) 



FIG. 358. 



The values obtained above for the e.m.fs. and currents in single- 

 phase, two-phase and three-phase converters can also be ob- 

 tained by substituting the proper values of n in equations 351, 

 352 and 353; single-phase n = 2, two-phase or four-phase n = 4, 

 and three-phase n = 3. The results are tabulated in Fig. 359. 



FIG. 359. 



These ratios of currents only hold on the assumption that the 

 power factor is unity and that the efficiency is 100 per cent. 



